雷达和光学地面SST站数据融合方案的研究
Developing a data fusion concept for radar and optical ground based SST station
摘要：
作为葡萄牙空间监视和跟踪方案的一部分，正在葡萄牙大陆中心的Pampilhosa da Serra空间天文台安装一个跟踪雷达和一个双宽视场望远镜系统（4.3° x2.3 °），以补充已经安装的用于中地球轨道和地球静止轨道监视的可部署光学传感器。跟踪雷达将跟踪低地球轨道上的空间碎片，最高可达1000公里，同时望远镜也将具有低地球轨道跟踪能力。本文旨在讨论利用这两个传感器位于同一位置的可能方法。使用这两种类型的传感器都利用了雷达测量的优势，可以提供精确的径向速度和物体距离，而望远镜可以提供更好的天空坐标测量。通过安装雷达和光学传感器，PASO可以延长空间碎片的观测时间，并实时关联来自光学和雷达来源的信息。在黄昏期间，两个传感器可以同时用于快速计算LEO物体的新的TLE，消除了大型SST网络中站点之间数据交换所涉及的时间延迟。这一概念将不会取代对在全球多个地点配备传感器的SST网络的需要，但将提供一套更完整的来自给定物体通道的测量数据，从而增加确定初始轨道或监测给定地点再入活动的附加值。PASO将有助于开发新的解决办法，以更好地确定物体的特征，提高SST的总体能力，并成为开发和测试用于空间碎片监测的新的雷达和光学数据融合算法和技术的理想场所。
英文摘要：
As part of the Portuguese Space Surveillance and Tracking (SST) program, a tracking radar and a double Wide Field of View Telescope system (4.3° x 2.3°) are being installed at the Pampilhosa da Serra Space Observatory (PASO) in the centre of continental Portugal, complementing an already installed deployable optical sensor for MEO and GEO surveillance. The tracking radar will track space debris in Low Earth Orbit (LEO) up to 1000 km and at the same time the telescope will also have LEO tracking capabilities. This article intends to discuss possible ways to take advantage of having these two sensors at the same location. Using both types of sensors takes advantage of the radar measurements which give precise radial velocity and distance to the objects, while the telescope gives better sky coordinates measurements. With the installation of radar and optical sensors, PASO can extend observation time of space debris and correlate information from optical and radar provenances in real time. During twilight periods both sensors can be used simultaneously to rapidly compute new TLEs for LEO objects, eliminating the time delays involved in data exchange between sites in a large SST network. This concept will not replace the need for a SST network with sensors in multiple locations around the globe, but will provide a more complete set of measurements from a given object passage, and therefore increase the added value for initial orbit determination, or monitoring of reentry campaigns of a given location. PASO will contribute to the development of new solutions to better characterize the objects improving the overall SST capabilities and constitute a perfect site for the development and testing of new radar and optical data fusion algorithms and techniques for space debris monitoring.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
